I picked up a refurbed ASUS RT-AC56U and did the 90 second trick to plop it into recovery mode (or whatever it is called).. it's web page was asking for a firmware to be located on my machine, so I pointed it at the tomato-RT-AC56U-ARM—123-AIO-64K.bin (I renamed it from the .trx extension) and clicked on UPLOAD.. then I walked away for 30 minutes or so.
When I came back, the web page that the firmware load was a success and that it was going to reboot to finish it out.. It had a single link that was going back to 192.168.1.1.. only that didn't work..
After some diagnostics and wiresharking, it seems that it does boot.. but it doesn't hand out any DHCP addresses.. once I statically set an IP on my ethernet interface I could ping 192.168.1.1.. but port 80 was not listening.. wireshark seemed to indicate that DNS server was listening and responding with rejections because it wasn't connected to the internet yet.. and that the router was sending out Microsoft Windows Browse Protocol master browser announcements.. and the packet decoded with a "Host Comment" of "TomatoUSB", and Master Browser Server Name: RT-<MACREMOVED>.
Also, dropbear sshd was listening on port 22.. but I could not figure out a user/password that would let me in.. I tried numerous combinations of root/admin/password/NULL, etc.. What else could I try???
I've tried rebooting by holding down reset button, WPS button, some other button, etc.. nothing seems to change anything.. only the POWER light ever comes on.. when I hold down the WPS button, the power light does start to blink slowly (almost immediately). The port lights on the other side were on also.
I tried ASUS's recovery executable, but it couldn't find the router.. looked like it was maybe trying to use SNMP to locate it. But I wasn't paying too close attention, so maybe that was wrong.
I never did plug in the "internet port" to anything.. think that would do anything differently?
What have I done? How can I recover?